#ifndef _MMeshIntersector
#define _MMeshIntersector
//-
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//+
//
// CLASS:    MMeshIntersector
//
// ****************************************************************************

#if defined __cplusplus

// ****************************************************************************
// INCLUDED HEADER FILES


#include <float.h>
#include <maya/MStatus.h>
#include <maya/MPoint.h>
#include <maya/MFloatPoint.h>
#include <maya/MFloatVector.h>
#include <maya/MMatrix.h>

// ****************************************************************************
// DECLARATIONS

class MStatus;
class MPointOnMesh;

// ****************************************************************************
// CLASS DECLARATION (MMeshIntersector)

//! \ingroup OpenMaya
//! \brief Mesh intersector. 
/*!
	The MMeshIntersector class contains methods for efficiently finding
	the closest point to a mesh.  An octree algorithm is used to
	find the closest point.

	The create() method builds the internal data required for the algorithm.
	As a result, calls to it should be minimized as it is a heavy operation.

	This class allows multiple threads to evaluate closest points
	simultaneously as the method getClosestPoint is threadsafe.

*/
class OPENMAYA_EXPORT MMeshIntersector
{
public:
	MMeshIntersector(void);
	virtual ~MMeshIntersector(void);

	MStatus create( MObject &meshObject, const MMatrix& matrix = MMatrix::identity );

	bool isCreated(void);

	MStatus getClosestPoint( MPoint& point, MPointOnMesh& meshPoint, double maxDistance = DBL_MAX );

	static const char*	className();

protected:
// No protected members
private:
	void *instance;
};

// Mesh point information. (OpenMaya) (OpenMaya.py)
class OPENMAYA_EXPORT MPointOnMesh
{
public:

	MPointOnMesh();
	MPointOnMesh( const MPointOnMesh& other );
	MPointOnMesh& operator=( const MPointOnMesh& other );
	
	MFloatPoint& getPoint();
	MFloatVector& getNormal();
	
	int faceIndex();	
	int triangleIndex();

protected:
// No protected members

private:
	friend class MMeshIntersector;
	MFloatPoint point;
	MFloatVector normal;
	int faceId;
	int triangleId;
};

#endif /* __cplusplus */
#endif /* _MMeshIntersector */
